I've noticed there are a few times when the displayed initiative order isn't followed. It'll sometimes randomly skip over my characters - for instance two were shown in order, but only one was allowed to act, and the other was skipped. I didn't notice any effects that would have justified the skip.

Additionally I've seen several instances where I should've had sneak attack opportunity (like when a monster is threatened by another party member) that, when I tried to use the ability, it only performed a regular attack. I didn't notice anything like disadvantage that would preclude the sneak attack. Also sometimes when attacking while dual wielding, only one attack will trigger. Maybe this could just be the result of one attack missing, but that miss not being displayed. I'm not sure.

A few other problems, which I'm sure are just the nature of early release, are the bugged appearances of almost every dialogue scene where someone will:
Not move their mouth when speaking;
Be attempting to hold an object, but some strange physics will occur, like having an open hand, or the object remaining static while their limbs move;
Just completely freeze when another is speaking;
Look in completely the wrong direction when speaking to someone;
Some others.

A couple of physics problems, the most noticeable being when, upon having slain an enemy with a crit, the enemy's body flew somewhat beneath the ground and stretched to a ridiculous length.